<\/span><\/h3>\n![\"Using](\"https:\/\/techmaina.com\/wp-content\/uploads\/2021\/07\/Using-Symbol-in-Code.png\" "\\"Using")
<\/p>\n
<\/p>\n
A little trick, when opening a code on the phone dial then an error appears, you can use certain symbols, namely commas and pluses.<\/p>\n
Using the plus sign:<\/strong><\/p>\n\n- Type the USSD code, for example, *123#<\/li>\n
- Then change the code to *+123#<\/li>\n
- To add a plus sign (+) press the number 0<\/li>\n<\/ol>\n
Using a comma:<\/strong><\/p>\n\n- Type the USSD code, for example, *889#<\/li>\n
- Add a comma (,) at the end to *889,#<\/li>\n
- You can add a comma (,) by pressing the asterisk ( * )<\/li>\n<\/ol>\n
<\/span>6. Reset Phone<\/strong><\/span><\/h3>\nThe purpose of doing a phone reset here is to restore configuration errors or errors that may have previously been stored on the system.<\/p>\n
Including the MMI code connection problem, of course, it is very possible to solve this way. Although with a note, not 100% successful.<\/p>\n
The data stored on the phone will be lost later. So, just use this method as an alternative, if the methods above have not yielded results either.<\/p>\n
Remember: <\/span><\/strong>Back up phone data before doing the reset process.<\/p>\n<\/span>7. Wait for some time until the network is normal<\/strong><\/span><\/h3>\n![\"Wait](\"https:\/\/techmaina.com\/wp-content\/uploads\/2021\/07\/Wait-for-some-time-until-the-network-is-normal.jpg\" "\\"Wait")
<\/p>\n
If it doesn’t work, there is a possibility that the provider network you are using is experiencing problems. I’ve experienced this before.<\/p>\n
The solution? At that time, all I could do was wait for some time. Sometimes 1 day, sometimes 2 days. Sometimes it’s fast, a few hours it’s back to normal.<\/p>\n
But before that, try using another card first, to check whether it’s from the network or not.<\/p>\n
<\/span>The Final Word<\/strong><\/span><\/h2>\nThat’s a brief discussion about the problem of an invalid MMI code, complete, and how to solve it.<\/p>\n
For me personally, who happened to have several times experienced invalid MMI code, overcoming this problem was not so troublesome.<\/p>\n
Simply by using the methods above, the problem will usually be resolved. Just apply one by one, then the phone will be back to normal.<\/p>\n
Oh yes, in addition to the discussion of this MMI code, sometimes there are also other network errors that cannot be defined.<\/p>\n
So, just ask for more details about the error you are experiencing. Send it via the comments column provided below, yes.<\/p>\n
May be useful.<\/p>\n","protected":false},"excerpt":{"rendered":"
When it comes to cellular networks, of course, it is closely related to checking pulses, quotas, and so on. To do this check, we have to send a certain code. For example *123#, *888#, and others. Normally, when the code is sent, an information message from the operator will appear. Even so, sometimes there are […]<\/p>\n","protected":false},"author":1,"featured_media":9799,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","footnotes":""},"categories":[1785],"tags":[2380,2378,2379,2381],"class_list":{"0":"post-9773","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-android","8":"tag-connection-problem-or-invalid-mmi-code-error","9":"tag-invalid-mmi-code","10":"tag-invalid-mmi-code-error","11":"tag-invalid-mmi-code-error-on-android"},"_links":{"self":[{"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/posts\/9773","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/comments?post=9773"}],"version-history":[{"count":5,"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/posts\/9773\/revisions"}],"predecessor-version":[{"id":21479,"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/posts\/9773\/revisions\/21479"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/media\/9799"}],"wp:attachment":[{"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/media?parent=9773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/categories?post=9773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techmaina.com\/wp-json\/wp\/v2\/tags?post=9773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"Fix](\"https:\/\/techmaina.com\/wp-content\/uploads\/2021\/07\/Fix-Connection-Problem-Or-Invalid-MMI-Code-Error.png\" "\\"Fix")
<\/p>\n